Trying to incorporate a 'QWERTY' keyboard into a small screen device is the second problematic factor alongside the small screen limitations. Folding keyboards are available for PDA's and some smart phones however this still constrains the user to a static seated position and so therefore these devices have not been very successful, as the consumer will often decide that they may as well use a laptop.
There are several variations of virtual keyboard. One device in particular is available in the form of gloves that interpret the movement of the fingers. Again this invention has not been very successful, as often the device will misinterpret the words being written and therefore resulting in slow productivity levels.
Alternatively, a virtual keyboard can be projected onto an external surface. This device also requires a greater degree of user attention and as a result is unsuitable for peripheral use. All of the above devices are ultimately limited due to the space required for the keyboard, the need for the user to be in a static position and the small screens. Therefore in my opinion i believe that companies should stop trying to invent these 'virtual keyboard' devices and consider a blue sky approach incorporating technologies from other areas such as gaming etc as it appear these limitations are not going to be overcome by concentrating on the areas currently struggling to be developed.
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